Merge branch 'master' into add-grid

Author: simonrw

Cargo.toml

@@ -14,5 +14,5 @@ keywords = ["plotting", "plot", "graph", "chart", "histogram", "scatter"]
 travis-ci = { repository = "milliams/plotlib" }
 
 [dependencies]
-svg = "0.5.11"
-failure = "0.1.2"
+svg = "0.5.12"
+failure = "0.1.5"